Team One Technologies Pte Ltd

Automobile Product

Vehicle Power Management System

The Vehicle Power Management System (VPMS) is a power management & devices control system designed for ambulance, in order to automatically manage the charge / discharge of the batteries and provide an integrated user interface to control the in-vehicle lamps / devices / fans / light according to the situation of the batteries.

Price : US $ 3000 / Unit

Functional Block Diagram

The functional block diagram of the VPMS is illustrated as in below.

As shown in the above figure, the system consists of 4 major parts:

PRE-VPMS: to provide the function of managing the charge of the batteries.
POST-VPMS: to provide the function of batteries discharge management and devices control.
Front control panel: is a user operating interface installed beside the driver.
Rear control panel: is a user operating interface installed at the rear chamber of the vehicle.

System Specifications

The VPMS system specification can be listed as below.

Physical Characteristics

Unit	Characteristics
PRE-VPMS	Weight	1.4kg
	Box Size	300mm (L) x 203mm (W) x 65mm (H)
	Material	Aluminum.
POST-VPMS	Weight	1.8kg
	Box Size	300mm (L) x 203mm (W) x 65mm (H)
	Material	Aluminum.
Front panel	Weight	0.23kg
	Box Size	150mm (L) x 65mm (W) x 37mm (H)
	Material	Aluminum.
Rear panel	Weight	0.23kg
	Box Size	150mm (L) x 65mm (W) x 37mm (H)
	Material	Aluminum.

Environmental specifications

Characteristics	Specifications	Remarks
Storage temperature	- 25ºC ~ + 85ºC	The specification given here is based on the estimation, not tested & verified yet.
Operating temperature	-10ºC ~ +65ºC
Vibration	10g
Shock	20g
Environmental proof	IP65

Electrical specifications

Unit	Characteristics	Specification	Remarks
Whole system when it is fully installed on the vehicle	Operating Voltage	9 ~ 18V
	Power consumption	300 mA @ 12V	Whole system
	Insulation	>10MΩ @ 500V
	AUX I maximum charging current	>100A
	AUX II maximum charging current	>100A
	AUX I maximum discharging current	>100A
	AUX II maximum discharging current	>100A
	Alternator input maximum current	>200A
	External charger maximum input current	>200A
	AUX I battery fully charged voltage setting	12.7V	Configurable
	AUX II battery fully charged voltage setting	12.7V	Configurable
	AUX I battery minimum charging voltage	8V	Configurable
	AUX II battery minimum charging voltage	8V	Configurable
	PRE-IGN signal characteristics	9 ~ 18VDC / 30mA	Switch signal
	ALT_D+ signal characteristics	9 ~ 18VDC / 30mA	Switching signal
	Communication interface	CAN	For all units
	ISP interface	MOTOBUS
	Output paths maximum loading capacity	>60A @ 60VDC	Provided the fuse is >60A for each channel
	Transmission attenuation over PRE-VPMS	<0.2V @ 60A
	Transmission attenuation over POST-VPMS	<0.2V @ 60A
	Power initialization time of PRE-VPMS	<8 Sec.

Reliability & maintainability

Characteristics	Specification	Remarks
MTBHF	> 30,000 hours
MTTR	< 45 Minutes
Lifespan	> 10 years

Interface & Hardness

The Interfaces include mechanical interfaces and electrical interfaces

Mechanical interfaces

About Us | Core Expertise | Our Services | Our Portfolio

Our Systems | Our Customers | Join Us | Contact Us | Home